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SoX is a cross-platform (Windows, Linux, MacOS X, etc.) command line utility that can convert various formats of computer audio files in to other formats. It can also apply various effects to these sound files, and, as an added bonus, SoX can play and record audio files on most platforms.

Free software
OS:Windows MacOS Linux
File size:2.6MB
Portable version
Old versions available
Version history available

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  Latest version:
14.4.2 (February 22, 2015)

Download sites

Visit developer's site

Download SoX 14.4.2 (direct link)

Download Portable, Mac, Linux and other versions:
Download SoX 14.4.2 portable (direct link)

Download SoX Mac version (direct link)

Download SoX Linux version

Download SoX old versions:
11 files20.6MB

Supported operating systems:
Windows Mac OS Linux

More information and other downloads:
Download sox with libmad.dll and libmp3lame.dll here.

SoX screenshot
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User options:
Email me when it has been updated    Report this tool (dead link/new version)  

Version history / Release notes / Changelog:

Previously deprecated features that have been removed in this release:

Deprec- Feature [O(ption)]
ated in [F(ormat)] [E(ffect)] Replacement
------- ---------------------- ----------------------
14.3.0 O -1/-2/-3/-4/-8 -b
14.3.0 O -s/-u/-f -e
14.3.0 O -A/-U/-o/-i/-a/-g -e
14.4.0 E swap with parameters remix
14.4.0 E mixer remix
14.4.1 OpenMP < 3.0 OpenMP >= 3.0
14.4.1 F ffmpeg ffmpeg/avconv via pipe

File formats:

o Add optional support for reading Ogg Opus files. (John Stumpo)
o Fix for max size text chunks in aiff files. (cbagwell)
o Add reading support for RF64 WAV files. (Dave Lambley)
o Work around for libsndfile created RF64 files with invalid
sizes. (Dave Lambley)
o Detect MS ADPCM WAV files with invalid blocks. (cbagwell)
o Detect Sphere files with invalid header sizes. (cbagwell)


o 'Deemph' can now also be used at 48kHz sample rate. (robs)
o 'Rate' now much faster in many cases. (robs)
o Allow sending spectrograms to stdout. (Ulrich Klauer)
o Allow use of Dolph window with spectrograms. (robs)
o Allow mixing time and sample-count arguments for the delay
effect, and for spectrogram -S and -d. (Ulrich Klauer)
o Support multi-channel LADSPA plugins. (Eric Wong)
o Support infinite repetition with repeat. (Ulrich Klauer)
o Improved pink noise frequency response in synth. (robs)
o Extended syntax for specifying audio positions to several
effects. (Ulrich Klauer)
o Fix integer overflow in mcompand. [3590093] (Guido Aulisi)
o Add optional latency compenstation for LADSPA plugins. (Eric Wong)

Other new features:

o New -p option for soxi to display sample precision. (Ulrich Klauer)
o New libsox example6: give explicit output attributes. (robs)

Internal improvements:

o Speed optimization for effects that operate on channels
independently. (Ulrich Klauer)
o Fix memory leaks. (Ulrich Klauer)
o Most internal symbols (lsx_*) are no longer exported. (Ulrich Klauer)

View full changelog

Sections/Browse similar tools:
Audio Encoders
Linux video tools
MacOS video tools

Guides and How to's:
No guides/tutorials, submit guides here.

Acronyms / Also Known As:
Sound eXchange


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